白介素-18在ANCA相关性小血管炎肾损害患者中的表达及其临床意义

目的通过检测抗中性粒细胞胞浆抗体（ANCA）相关性小血管炎（AASV）肾损害患者血清及尿液白介素-18（IL-18）水平,探讨IL-18在AASV肾损害应用中的可能价值。方法比较健康对照组与AASV组、AASV活动组与缓解组间血/尿IL-18水平,分析尿IL-18与传统病情活动性指标如ANCA滴度、血肌酐、C-反应蛋白（CRP）、伯明翰系统性血管炎活动度评分量表（BVAS）评分值等的相关性,绘制尿IL-18评估AASV活动性的ROC曲线,评价IL-18在AASV肾损害中的意义。结果AASV组尿IL-18水平比健康对照组显著升高（P<0.05）,AASV活动组尿液与血液IL-18水平均高于缓解组（P<0.05）。治疗随访半年后,病情由活动转为缓解的患者尿IL-18水平较治疗前明显下降（P<0.05）。AASV患者尿IL-18与血清ANCA滴度、BVAS评分值呈正相关（P<0.05）,与血肌酐、胱抑素C、CRP、尿微量白蛋白/肌酐比值、尿β2-微球蛋白等无明显线性相关。AASV活动期患者的血、尿IL-18水平呈正相关（P<0.05）。尿IL-18评估AASV病情活动性的曲线下面积（AUC）为0.816（P<0.05）,当检测的截点值为0.130 pg·mL-1·Cr-1时,其敏感度和特异度分别为85.7%和71.4%。结论AASV肾损害患者尿液IL-18水平升高,与疾病活动性相关,在早期预测AASV病情及活动性上有一定价值。福建省自然科学基金(No.2014J01430

ANCA相关性小血管炎肾损害患者尿液肾损伤生物标志物的检测及意义

目的:探讨ANCA相关性小血管炎(AASV)肾损害患者尿液中肾损伤生物标志物的表达及变化特点,以探寻在AASV早期诊断及治疗的应用价值。方法:用酶联免疫吸附法(ELISA)检测AASV组及对照组尿液β连环蛋白(β-catenin)、尿海藻糖酶(trehalase)、中性粒细胞明胶酶相关脂质运载蛋白分子(Neutrophil Gelatinase-Associated Lipocalin,NGAL),与血清ANCA及血肌酐(Scr)、胱抑素C(Cys C)、C-反应蛋白(CRP)、尿微量白蛋白/肌酐比值(ACR)、β2-微球蛋白(β2-M)等临床指标比较,建立患者的ROC曲线来评价尿液β-catenin、trehalase、NGAL对AASV的诊断及疾病活动的预测价值。结果:(1)AASV组患者尿液β-catenin(P<0.01)、trehalase(P<0.01)、NGAL(P<0.05)水平显著高于对照组,且尿液β-catenin、trehalase在AASV活动期与缓解期之间差异有统计学意义(P<0.01)。(2)与治疗前相比,活动期治疗后尿液β-catenin、trehalase水平明显下降(P<0.05)。(3)AASV患者尿β-catenin水平与Scr、β2-MG、ACR呈正相关,与GFR呈负相关(P<0.05);尿trehalase水平与β2-MG呈正相关(P<0.05);尿NGAL水平与BUN、Cys C、ACR呈正相关(P<0.05)。(4)尿液β-catenin、trehalase、NGAL诊断AASV肾损害的ROC曲线下面积(AUC)分别为0.966(P<0.001)、0.903(P<0.001)、0.752(P<0.05);尿β-catenin、trehalase判断AASV病情活动性的AUC均大于血清ANCA滴度(P<0.05)。结论:尿液β-catenin、trehalase、NGAL可能是诊断AASV敏感性和特异性较高的生物学标志物。福建省自然科学基金资助项目(No.2014J01430)

The Phylogeny Tree Reconstruction Based on the Usage Frequencyof Codons and Corresponding Complementary Codons

为了更深入地了解密码子与互补密码子使用相关的内涵,70个单细胞和多细胞生物被更进一步的分析。结果得到70种细胞生物具有较高的相关系数平均值(0.5101,标准差是0.1389),表明密码子与其互补密码子使用间确实存在正的使用相关联系,进一步地支持了以前的结果。此外,通过对70个单细胞和多细胞生物在基于密码子与互补密码子使用频率差异,以及配对频率的高低信息的分析基础上,绘制进化树,得到的进化树与传统的进化树非常接近。The hypothesis that a codon bias usage is identical to its complementary codon usage preference has been investigated by using the relationship analysis of codons vs their complementary ones among 70 organisms. Significantly positive usage correlations between codons and their complementary ones were found and its implication in biology was also analyzed. The codoncomplementary codon tree was further built, which fairly exhibited the evolutionary relationship of these organisms. The results not only demonstrated the validity of our hypothesis,but also manifested the usefulness of correlation analysis in studying on codon usage pattern and molecular evolutionary mechanisms of organism.ThisworkwassupportedbyagrantfromtheNationalNaturalScienceFoundationofChina(No.60305001)andagrantfromtheScienceandTechnologyMinistryofChina(PreliminaryStudyonFunctionalGenomeSystematics)(No.2001CCA01400)

ANCA相关性血管炎肾损害的中医证候及与临床相关性研究

目的:观察抗中性粒细胞胞浆抗体(ANCA)相关性血管炎(AAV)肾损害患者中医证候特征及分布规律,探讨其与临床、实验室指标的关系,为AAV肾损害的中医诊断和辨证施治提供线索。方法:收集AAV肾损害患者中医症状体征,进行证候判定,采空腹静脉血查Hb、白蛋白(Alb)、补体C3、C-反应蛋白(CRP)、BUN、Scr、血浆D-二聚体(D-D)等指标,进行肾损害程度及BVAS活动性评分,探讨各中医证候与临床实验指标间的关系及规律。结果:AAV肾损害的中医证候分布情况为:脾肾两虚型52例(41. 6%)、气阴两虚型38例(30. 4%)、湿热内蕴型19例(15. 2%)、肺脾气虚型16例(12. 8%)。冬、春季以脾肾两虚及气阴两虚型多见,夏季以气阴两虚型多见(P <0. 05)。各证型组的Hb、Alb、C3水平按气阴两虚型、脾肾两虚型、湿热内蕴型依次降低,D-D、Scr、BVAS评分值依次增高。与湿热内蕴证比较,气阴两虚、脾肾两虚Hb升高(P <0. 05)、Scr降低(P <0. 05),气阴两虚、脾肾两虚D-D、BVAS评分降低(P <0. 05)。结论:AAV肾损害的中医证型以脾肾两虚型最多见,湿热内蕴型的肾损害更重、BVAS评分更高。福建省自然科学基金资助项目(No.2014J01430

血清高迁移率族蛋白B1在ANCA相关性小血管炎肾损害血瘀证患者的表达及意义

目的:探讨血清高迁移率族蛋白B1(HMGB1)在抗中性粒细胞胞浆抗体(ANCA)相关性小血管炎(AASV)肾损害瘀血阻滞证患者的表达及意义。方法:采取前瞻性研究,中医辨证就诊的AASV肾损害患者血瘀证的分布情况;采用酶联免疫吸附法(ELISA)检测AASV肾损害血瘀患者血清HMGB1水平,并与24 h尿蛋白定量、血Hb、Alb、CRP、D-二聚体、BUN、Scr、GFR、肾损害程度、ANCA、伯明翰血管炎活动积分(BVAS)等因素进行相关性分析,探讨HMGB1在AASV肾损害瘀血阻滞型患者中的意义。结果:AASV肾损害中医证候分布以脾肾两虚证(42.85%)、气阴两虚证(30.95%)多见,其中57.14%兼有瘀证。AASV肾损害血瘀证患者血清HMGB1水平明显升高(P0.05)。结论:血清HMGB1可能与AASV肾损害瘀血阻滞的发病有一定关系。福建省自然科学基金资助项目(No.2014J01430

1978～2008年中国湿地类型变化

分别基于美国陆地卫星(Landsat MSS/TM/ETM+)和中巴资源卫星(CBERS-02B)影像数据,以人工目视解译为主,完成了中国1978～2008年4期(基准年分别为1978,1990,2000和2008年)湿地遥感制图,并进行了大量的室内外验证.在此基础上,对我国湿地现状及近30年来湿地变化进行了初步分析,得到以下主要结论:(ⅰ)截止2008年,中国湿地面积约为324097km2,其中以内陆沼泽(35%)和湖泊湿地(26%)为主.(ⅱ)1978～2008年,中国湿地面积减少了约33%,而人工湿地增加了约122%.过去30年里湿地减少的速度大幅降低,由最初5523km2/a(1978～1990年)降为831km2/a(2000～2008年).(ⅲ)减少的自然湿地(包括滨海湿地和内陆湿地),其类型变化由湿地向非湿地转化的比例逐渐降低.初期(1978～1990年)几乎全部(98%)转换为非湿地;在1990～2000年间减少的自然湿地约有86%转化为非湿地,而在2000～2008年,这一比例下降为77%.(ⅳ)气候变化和农业活动是中国湿地变化的主要驱动因素,湿地变化在中国分为三大不同特征区域,即西部三省/自治区(西藏、新疆和青海)、北部两省/自治区(黑龙江和内蒙古)和其他省市区.其中西部区域尤其是青藏高原,湿地变化的驱动因子以气候增温为主;新疆湿地由于气候增温和农业活动共同作用造成变化不大.北部省/自治区的湿地变化则主要由农业活动引起;而其他省市区的湿地变化几乎完全受控于人类的农业经济活动

Research on geochemical characteristics and environmental risk of Be,Sb and Tl in surface sediments of the Nansihu Lake

The South-to-North Water Diversion Project is one of the biggest water transfer projects with the largest beneficiary population in the world. Nansihu Lake is the biggest reservoir lake in the east route of South-to-North Water Diversion Project. This study analyzed contents distribution and speciation characteristics of beryllium(Be),antimony(Sb) and thallium(Tl) in surface sediments of the Nansihu Lake. Their environmental risks were evaluated by multiple methods. Based on the results given by the predecessors,the toxic response factors of Be,Sb and Tl were defined in this paper. The results showed that the average contents of Be and Sb were a little higher than their background values,and Tl content was lower than its background value. Speciation analysis showed that the residual forms of Be,Sb and Tl accounted for over 65%,70%,and 84% respectively,while the contents of the acid soluble was very low which led to low mobility and bio-availability. The surface sediments of Nansihu Lake had low Be,Sb and Tl enrichment degree, and therefore the ecological risk was low. Be,Sb and Tl were mainly from nature and ancillary from human activity. Different from Be and Tl,the main human activity source of Sb might be atmospheric settlement. Distributions of Be,Sb and Tl in the sediments were affected by particle size,TOC,and Al/Fe/Mn to some extent.</p

The Toxicities of Cu,Zn,Cd on Larval Red Sea Bream and Larval Black Sea Bream

研究了Cu、zn、Cd三种重金属对真鲷幼鱼和黑鲷幼鱼的毒性作用。结果表明Cu、zn、Cd对真鲷、黑鲷幼鱼的毒性须序均为Cu＞zn＞Cd；Cu、zn、Cd对两种幼鱼的96H半致死浓度及安全浓度：真鲷幼鱼为Cu0.31Mg/l、0.031Mg/l，zn3.6Mg/l、0.36Mg/l，Cd0.53Mg/l、0.053Mg/l；黑鲷幼鱼为Cu0.20Mg/l、0.02Mg/l，zn1.8Mg/l、0.18Mg/l，Cd0.3Mg/l、0.03Mg/l.A study of the toxication of Cu , Zn , Cd on larval red sea bream and larval blacksea bream was conducted.The results indicated that the toxicity sequence was Cu>Cd>Zn.The 96 hMedian Lethal Concentrations and SaFe Concentrations of the two Fishes : For larval red sea bream wereCu 0.31 mg/L, 0.031 mg/L,Zn 3.6 mg/L,0.36 mg/L, Cd 0.53 mg/L,0.053 mg/L; For larvalblack sea bream were Cu 0.20 mg/L, 0.02 mg/L, Zn 1 .8 mg/L, 0.18 mg/L, Cd 0.3 mg/L , 0.03mg/L

Simultaneous Determination of Trace Elements in Human Hairby Inductively Coupled Plasma Massspectrometry (ICPMS)

建立了微波消化、等离子体质谱同时测定人发样品中20种元素含量的方法，对影响测定结果的因素进行了讨论和优化，所测元素的检出限（3σ，n＝11）最高为1.39ng/Ml（SE），最低为0.0001ng/Ml（bA），标准加入回收率介于95%~110%之间，对国家标准物质样品分析的结果与所给参考值一致.本方法具有灵敏度高，基体干扰小，简便快速，结果可靠等优点，已成功地应用人发样品中微量元素的测定.Contents of twenty elements in human hair were measured with microwave digestion and inductively coupled plasma massspectrometry (ICPMS).The experimental conditions were discussed and optimized.Detection limits(3σ,n=11) results indicated that the highest DL was 1.39 ng/mL(Se) and the lowest was 0.000 1 ng/mL (Ba).The recoveries of spikes For 20 elements were between 94%--110%.The analytical results of national certiFied reFerence material demonstrated the applicabilityof the proposed method